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标题: 问1道逻辑题 [打印本页]

作者: jason1985716 时间: 2008-8-25 17:54
标题: 问1道逻辑题
During the day in Lake Constance, the zoo-plankton D. hyalina departs for the depths where food is scare and the water cold. D. galeata remains near the warm surface where food is abundant. Even though D. galeata grows and reprocess much faster, its population is often outnumbered by D. hyaline.
Which of the following, if true, would help resolve the apparent paradox presented above?
(A)    The number of species of zooplankton living at the lakes is twice that of species living at the surface.
(B)    Predators of zooplankton, such as white-fish and perch, live and feed near the surface of the lake during the day.
(C)    In order to make the most of scare food resources, D. hyaline matures more slowly than D. galeata.
(D)    D. galeata clusters under vegetation during the hottest part of the day to avoid the sun’s rays.
(E)    D. galeata produces twice as many offspring per individual in any period of time does D. hyalina.

这道题我用排除法选E，但觉得E说反了，不知道正确答案是哪一个？

[此贴子已经被作者于2008-8-25 17:57:50编辑过]

作者: wenhaogsm 时间: 2008-8-25 23:45

个人感觉，这道题选B吧。

白天，H在深处，食物少水冷，G在表面，好吃好喝。G生长和发育都比H快，但数量却被H超过。

A 无关比较

B 捕食者也住表面，就近吃饭。所以G被吃的多。

C 成熟快慢无关

D 防晒无关

E 后代多文中已经提到了，这个不能解释矛盾

作者: mac_bobo 时间: 2008-8-26 06:00
B is correct!

作者: jason1985716 时间: 2008-8-26 13:44
恩，有道理，我选错了，谢谢

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